Answer:
Step-by-step explanation:
Given
Represent the weight of the Jar with J and the sugar with S
Initially, we have:
After 2/3 of sugar is removed we have:
Required
Determine the weight of the jar
--- (1)
--- (2)
Simplify (2)
Take LCM
Make S the subject in (1)
Substitute 850g - J for S in
Multiply through by 3
Collect Like Terms
Make J the subject
<em>The jar weighs 370g</em>
Proportional relationship
We know a proportional relationship is when one of the variable is obtained by multiplying the other variable by a constant number.
For example, in an equation it can be represented:
<em>y = 2x</em>
<em />
In a table, we can represent it by
<em />
In a graph,
Answer: all of them
Answer:
y = 2x^2 + 4x - 2
Step-by-step explanation:
y=2(x+1)^(2)-4 is in vertex form. We want the same equation in standard form, which looks like y = ax^2 + bx + c.
Perform the indicated multiplication (squaring of x + 1):
y = 2(x^2 + 2x + 1) - 4, or
y = 2x^2 + 4x + 2 - 4, or
y = 2x^2 + 4x - 2 This is in the standard form of a quadatic.